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Physiology General 585f4738

Which of the following is the order of activation after stimulation of Purkinje fibers is

A
Septum → Endocardium → Epicardium
B
Endocardium → Septum → Epicardium
C
Epicardium → Septum → Endocardium
D
Septum → Epicardium → Endocardium
High-Yield Explanation
Order of depolarization in the heart. -        First- Left side of interventricular septum -        Moves to right across the mid-portion of the septum -        Apex of heart -        Along ventricular walls to AV groove (Endocardium to epicardium) -        Last- Posterobasal portion of the left ventricle, pulmonary conus, uppermost portion of the septum.

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